/* Shared navigation bar styles across every BlockBuilder Studio page.
   Single source of truth, do not duplicate these rules in any page <style>
   block. Page-specific button variants like .btn-lg, .btn-xl, .btn-coffee
   stay in the page that uses them.

   Requires the following CSS variables in :root of the host page:
     --text, --text-mid, --text-dim, --border, --bg-elev, --accent
   All public pages already define them.
   ──────────────────────────────────────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-in {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Brand block (logo + wordmark + STUDIO chip) */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand-mark { width: 30px; height: 30px; }
.brand-name { font-weight: 500; }
.brand-name strong { font-weight: 700; }
.brand-tag {
  font-size: 9px;
  letter-spacing: 0.18em;
  font-weight: 700;
  background: var(--accent);
  color: #0a0c10;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 4px;
  text-transform: uppercase;
}

/* Centre links */
.nav-links { display: flex; gap: 28px; margin-left: 28px; font-size: 14px; }
.nav-links a {
  color: var(--text-mid);
  font-weight: 500;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.15s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent); }
.nav-sep {
  color: var(--text-dim);
  opacity: 0.45;
  user-select: none;
  font-weight: 400;
  margin: 0 -10px;
  pointer-events: none;
}

/* EN / PT language toggle. Sits on the right side of the nav before the
   action buttons. Active chip is filled lime, inactive is ghost. */
.lang-toggle {
  display: inline-flex;
  margin-left: auto;
  padding: 2px;
  background: var(--bg-elev, #11141b);
  border: 1px solid var(--border, #232838);
  border-radius: 7px;
}
.lang-chip {
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-mid);
  background: transparent;
  border: 0;
  padding: 4px 9px;
  border-radius: 5px;
  cursor: pointer;
  transition: color 0.12s var(--ease), background 0.12s var(--ease);
}
.lang-chip:hover { color: var(--text); }
.lang-chip.is-active {
  background: var(--accent);
  color: #0a0c10;
}

/* When the language toggle is present, nav-actions can't claim margin-left:auto
   (the toggle does). Adjust to a regular flex gap. */
.nav-actions { display: flex; gap: 10px; align-items: center; }
.nav-actions.nav-actions-pushed { margin-left: auto; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, background 0.15s;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #0a0c10; }
.btn-primary:hover { background: #d9ff5a; transform: translateY(-1px); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-elev); border-color: var(--text-dim); text-decoration: none; }

@media (max-width: 980px) {
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  .nav-actions .btn-ghost { display: none; }
}